98 Pontiac Bonneville SE 3.8 L started bucking & jumping?

Question:
My 98 Pontiac Bonneville SE started bucking & jumping this morning so bad my wife had to turn around and come home.She say's it was running fine yesterday when she parked it.She filled it up the other day and it's on a half tank now so I don't think it's water in the gas because she sayed it's been running fine.I'm going to change spark plugs and air filter in the morning but was just wondering if anybody had any other suggestions?

Answers:

oil changes and tire question?

Plugs and wires are a good place to start. Might want to check coolant level and plugs for any signs of coolant. 3.8's are bad for the intake plenum to leak coolant into the cylinders and cause misfire. Good luck

How do I get somebody else's CAR paint off of my car?

sounds like a fuel pump or filter. a fuel filter is recommended every 24 months or 30,000 miles when is the last time you had it changed. also check the gas cap to see if its venting.

Every time I step on the brakes in my car the head lights dim. WHY?

It could be so many things nowdays it is best to take it somewhere and hook it up to the computers at auto zone or somewhere like that....it could be something as trivial as a sensor

G.M. Tecs only please!!?


edit: if the engine light is on they can tell you exactly what it is with the computer and it can save you a lot of time labor and money in the process

How can you tell if the button is a front defroster or a rear defroster?

recomend preventitive maintenence you should do a tune up a fuel filter fuel injection service coolant flush radiator hoses egr service go to a good repair facility that has a Tech 2 and check for updates this will also help i do see this problem a lot where i work also check trans fluid this may help also i dont recomend
a dealership unless under waranty

Vibration during pick up?

when you got complete silence turn your key just about were it starts go back of car by fuel tank listen how healthy the pump sounds

Why is front wheel drive economically beneficial?

Did you read the codes? could be alot of things.
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